Seasonal variation in the lipidome of two species of Millepora hydrocorals from Vietnam coastal waters (the South China Sea)

A comparison of food sources of nudibranch mollusks at different depths off the Kuril Islands using fatty acid trophic markers

“…The unexpectedly high content of 22:5n-6 found in C. pacifica may be a result of high activity of C 2 elongase and Δ4 desaturase that convert 20:4n-6 into 22:5n-6. Such activity has been hypothesized in the hydrocoral Millepora to explain the extremely high levels of 22:5n-6 and 22:6n-3 ( Imbs, Dang & Nguyen, 2019 ; Imbs et al, 2021 ). The relatively low level of 20:5n-3 in C. pacifica can be due to either conversion of 20:5n-3 to 22:6n-3 or a deficiency on dietary 20:5n-3 in deep waters ( Kiyashko et al, 2014 ).…”

Applications of lipidomics in marine organisms: progress, challenges and future perspectives

“…The use of lipidomics to understand the associations between organisms of different phyla has been the focus of several studies. Imbs et al have mapped the lipidome of soft corals, hydrocorals (cnidaria phylum) and nudibranch (mollusc phyla) to trace lipid dynamics in coral symbiotic associations (i.e., host coral and symbiotic dinoflagellates) and trophic relationships in predator-prey systems, such as nudibranch molluscs preying on soft corals (e.g., [123][124][125][126] ). Soft coral chemotaxonomic markers (e.g., tetracosapolyenoic acids (TPA), 24:5 n-6 and 24:6 n-3) have been used to trace nudibranch trophic relationships by analysing the structural composition of nudibranch lipid molecular species.…”

“…142 The analysis of marine invertebrate lipidome has demonstrated that these organisms are source of unique lipids with relevance for biological applications. The phosphonolipid CAEP has been identified in the deep-sea soft coral P. arborea, 125 the soft coral Sinularia siaesensis, 126 cold-water nudibranchs Dendronotus robustus and Dendronotus sp., 127 Millepora hydrocorals, 123 the Japanese edible jellyfish R. esculentum, 134 and the Galician mussel M. galloprovincialis, 141 among others (see ESI † Table S2). CAEP contains a P-C bond in their structure, which prevents the hydrolytic effect of phospholipase and phosphatase enzymes, keeping their unsaturated FA groups stable under oxidative conditions.…”

“…, host coral and symbiotic dinoflagellates) and trophic relationships in predator–prey systems, such as nudibranch molluscs preying on soft corals ( e.g. , 123–126 ). Soft coral chemotaxonomic markers ( e.g.…”

Lipidomic profiling reveals biosynthetic relationships between phospholipids and diacylglycerol ethers in the deep-sea soft coral Paragorgia arborea

“…Marine invertebrates are a paraphyletic systematic group comprising more than 90% of all marine animal species, but data on their lipidomes are very limited to date 9 . These lipidomes have been partly described from some species of shrimp 10 – 12 , lobsters 13 , crabs 14 , 15 , jellyfish 16 , 17 , starfish 18 , sea urchins 18 , holothurians 18 , bivalves 19 – 25 , gastropods 26 , nudibranch molluscs 27 , 28 , sponges 29 , and hydrocorals 30 , 31 . Among coral polyps (the class Anthozoa), lipidome or its polar part has been analyzed in some species belonging to four orders: Scleractinia (reef-building corals) 32 – 34 , Alcyonacea (soft corals) 35 – 37 , Zoantharia 38 , and Actiniaria (sea anemones) 39 – 41 .…”